/*
 * Copyright (c) 2009-2010, okazoh_tk. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *  - Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  - Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *  - Neither the name of the copyright holder nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef ALKES_TIME_H_INCLUDED_
#define ALKES_TIME_H_INCLUDED_

#include "alkes/internal.h"

namespace alkes {

class AL_EXPORT Time
{
public:
    typedef uint64_t    usec_type;

    static void initialize(usec_type start_usec = 0);

    static void setStartUsec(usec_type start_usec);
    static void getNow(Time& t);

    Time() {}
    Time(const Time& rh) : usec_(rh.usec_) {}
    void operator=(const Time& rh) { usec_ = rh.usec_; }

    const Time operator+(const Time& rh) const
    {
        return Time(this->usec_ + rh.usec_);
    }

    const Time operator-(const Time& rh) const
    {
        return Time(this->usec_ - rh.usec_);
    }

    operator usec_type() const
    {
        return usec_;
    }

    template<typename T>
    T asUsec() const
    {
        return (T)usec_;
    }

    template<typename T>
    T asMsec() const
    {
        return (T)(usec_ / 1000);
    }

private:
    Time(usec_type usec) : usec_(usec) {}

private:
    usec_type   usec_;
};

}

#endif
